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Monolithic Power Systems Inc. MP28167GQ-Z
- Part No.:
- MP28167GQ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVFQFN
- Datasheet:
-
MP28167GQ-Z.pdf
- Description:
- IC REG BUCK BOOST 5V 3A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,255
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Product details
Overview
MP28167GQ-Z from Monolithic Power Systems is a synchronous 4-switch integrated buck-boost DC/DC converter with fixed 5V output, operating across 2.8V–22V input range, delivering up to 3A continuous output current, featuring constant-on-time (buck) and constant-off-time (boost) control for fast transient response, and housed in a thermally enhanced 3mm×3mm QFN-16 package. It supports forced PWM mode, programmable constant-current limit, and full protection suite including OCP, OVP, UVP, and thermal shutdown.
For engineers reviewing the MP28167GQ-Z datasheet, MP28167GQ-Z pinout, MP28167GQ-Z application, or MP28167GQ-Z equivalent, this page delivers verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options - all grounded in Monolithic Power's Rev 1.0 datasheet and functional block diagram.
Technical Context
The MP28167GQ-Z implements dual-mode control: constant-on-time regulation in buck mode and constant-off-time in boost mode, enabling seamless transition between buck, boost, and buck-boost operation as VIN approaches VOUT. Its 4-switch topology uses internal MOSFETs with RDS(ON) of 25mΩ (HS) and 21mΩ (LS), supporting high-efficiency conversion across the full 2.8V–22V input range while maintaining fixed 500kHz switching frequency.
It integrates a 3.65V internal LDO (VCC) powered from VIN, EN-controlled startup with 1.1V threshold and 110mV hysteresis, and analog ground (AGND) separation for noise-sensitive feedback. Protection logic includes hiccup-mode OVP (160% trip, 140% recovery), output short-circuit protection, and non-latching thermal shutdown at 150°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 22V - supports wide-input industrial, automotive, and USB PD-adjacent power rails without external pre-regulation. |
| Output Voltage | Fixed 5.0V ±1.5% - eliminates external resistor divider, simplifies layout, and ensures stable USB-compliant bus supply. |
| Max Output Current | 3A continuous - sustains full load across ambient temperatures from –40°C to +125°C junction, validated by IOUT_LIM2 spec. |
| Switching Frequency | 500kHz ±20% - enables compact magnetics (e.g., 4.7µH inductor) and predictable EMI filtering design. |
| Control Architecture | COT in buck / COffT in boost - delivers <500µs load-step response (0A→3A) and smooth mode transitions without audible artifacts. |
| Thermal Shutdown | 150°C rising, 130°C falling - provides non-latching overtemperature protection with sufficient margin for QFN-16 θJA = 26°C/W on 4-layer PCB. |
| Output CC Limit | Adjustable via OC pin (RSET) - supports 0.98A to 5.11A setpoints using standard resistors (e.g., 21.5kΩ → 3.56A), enabling precise battery charging or LED driver tailoring. |
Pinout & Package
MP28167GQ-Z is packaged in a 16-pin QFN (3mm × 3mm, 0.5mm pitch) with exposed thermal pad. Pin 1 is top-left corner (marked "BJH"), and pins 2/11 are dedicated GND planes for low-impedance power return.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Main power input | Drain node of internal HS FETs; accepts 2.8V–22V; requires local 100µF + 22µF ceramic input capacitance. |
| 2, 11 GND | Power ground | Primary reference for output regulation and high-current return path; must be connected via multiple vias to inner ground plane. |
| 3 EN | Enable control | Active-high logic input (1.1V threshold); internal 2MΩ pull-down allows floating-disable; controls soft-start initiation. |
| 4, 8 NC | No connection | Must be tied to GND per datasheet - not left floating to avoid parasitic coupling or ESD risk. |
| 5, 6 RSV1/RSV2 | Reserved | Internally unconnected; must be tied to GND or VCC - floating prohibited to prevent latch-up or instability. |
| 7 OC | Constant-current set | Analog input for external resistor; sets average output current limit (e.g., 21.5kΩ → 3.56A) using internal sensing FET. |
| 9 VCC | Internal LDO output | 3.65V regulated supply for gate drivers and logic; requires 1µF ceramic decoupling placed adjacent to pin. |
| 10 AGND | Analog ground | Reference for feedback and current-sense circuitry; must be star-connected to GND near FB divider to minimize noise injection. |
| 12 OUT | Regulated output | 5V power rail output; connects directly to output capacitor bank (100µF + 22µF typical); carries full 3A load current. |
| 13, 16 BST1/BST2 | Bootstrap supplies | Drive floating gates of HS FETs SW1/SW2; require 100nF ceramic capacitors between BSTx and respective SWx nodes. |
| 14, 15 SW1/SW2 | Half-bridge switching nodes | Connect to opposite ends of single inductor; carry bidirectional current during buck/boost cycles; require tight loop layout with BST caps. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4-switch topology | Eliminates need for external MOSFETs and gate drivers - reduces BOM count by ≥8 components and PCB area by >30% vs discrete solutions. |
| Programmable CC limit via OC pin | Enables precise current regulation for USB-C power delivery adapters or portable device battery charging without adding sense resistors or op-amps. |
| 130mV line-drop compensation | Automatically adjusts output voltage based on load current to maintain ±1% regulation at point-of-load under 3A step changes. |
| Hiccup-mode OVP & SCP | Prevents catastrophic failure during output short or overvoltage events by cycling enable/disable with 12.5% duty cycle until fault clears. |
| EN shutdown discharge function | Activates internal 60–100Ω discharge path when disabled, safely bleeding 5V output to <50mV within 50ms - critical for hot-swap safety compliance. |
Applications
| USB-C Power Delivery Adapter | Industrial 24V Field Bus Converter |
|---|---|
Use Scenario: Converting variable AC-DC adapter output (9–20V) to stable 5V/3A for USB-C downstream ports. IC Role / Device Role / Timing Role: Primary buck-boost regulator managing dynamic input from PPS negotiation while maintaining tight 5V regulation and fast transient immunity. Use Value: Delivers >90% efficiency at 12VIN/3AOUT, supports seamless mode transitions during voltage stepping, and meets USB-IF ripple requirements (<150mVpp) without additional LC filtering. | Use Scenario: Deriving 5V logic rail from noisy 24V industrial PLC backplane with wide input variation (18–32V). IC Role / Device Role / Timing Role: Input-tolerant bus converter providing isolated 5V supply for microcontrollers, sensors, and CAN transceivers in harsh EMI environments. Use Value: Maintains regulation down to 2.8V input, survives brownouts via UVLO hysteresis (205mV), and suppresses conducted noise via integrated gate drivers and AGND separation. |
| Portable Medical Device Power | Automotive Infotainment Display Supply |
Use Scenario: Powering FPGA-based diagnostic modules from single-cell Li-ion (3.0–4.2V) or dual-cell (6–8.4V) battery packs. IC Role / Device Role / Timing Role: Single-inductor buck-boost core enabling compact, low-noise 5V generation across full battery discharge curve without voltage inversion stages. Use Value: Achieves >85% efficiency at 3.3VIN/2AOUT, incorporates thermal shutdown for battery-safety compliance, and supports pre-biased start-up to avoid system reset during hot-plug events. | Use Scenario: Generating 5V display backlight and interface power from vehicle battery (9–16V) with cold-crank tolerance (down to 6V). IC Role / Device Role / Timing Role: Robust front-end regulator handling load-dump transients and cranking dips while sustaining 5V for HDMI PHY and touch controller. Use Value: Operates continuously at 6VIN, features hiccup-mode SCP to survive accidental shorted display cables, and uses forced PWM to eliminate low-load burst-mode noise interfering with audio subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP28164GQ-Z | Same 3mm×3mm QFN package but fixed 3.3V output; lacks OC pin for CC programming; 2.5A max output. | Suitable only where 3.3V rail is required; no current-limit flexibility for charging or LED biasing. | Select when 3.3V logic supply is needed and CC control is unnecessary - saves external resistor but sacrifices design versatility. |
| TPS63020DSJR | TI part with 2.5V–5.5V input, 3A output, adjustable VOUT (0.9–5.5V); uses peak-current-mode control instead of COT/COffT. | Requires external feedback resistors and lacks hiccup-mode OVP; lower max input limits use in 24V systems. | Choose for designs needing programmable output voltage and TI ecosystem support, but verify thermal performance at 22VIN - MP28167GQ-Z offers wider VIN and superior transient response. |
Compared with MP28164GQ-Z, MP28167GQ-Z provides higher output current, programmable CC limit, and broader input range - making it preferable for USB-C and industrial bus applications. Against TPS63020DSJR, it delivers superior 22V input capability, integrated OVP hiccup, and faster load transients due to its dual-mode timing architecture.
Availability
MP28167GQ-Z is available at Aetrix Electronics and suitable for USB-C power delivery adapters, industrial 24V field bus converters, and portable medical device power supplies requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MP28167GQ-Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with over two decades of expertise in DC/DC conversion, motor drivers, and LED controllers.
The MP28167 belongs to MPS's integrated buck-boost converter product line, designed specifically for applications demanding wide-input regulation, seamless mode transition, and compact footprint - targeting USB PD, industrial automation, and portable electronics.
FAQ
What is the minimum input voltage required for MP28167GQ-Z to regulate 5V output?
The MP28167GQ-Z maintains regulation down to 2.8V input, verified by its absolute minimum operating condition and UVLO rising threshold of 2.65V (typical). Below 2.8V, the device remains enabled but cannot sustain 5V output under load due to internal headroom constraints in boost mode.
Can MP28167GQ-Z operate with pre-biased output during startup?
Yes - the MP28167GQ-Z supports pre-biased start-up. When VOUT is already present at power-on, the IC disables both high-side and low-side switches until the internal soft-start voltage exceeds the feedback reference, preventing reverse current flow and output overshoot.
How is the constant-current limit set, and what resistor value yields 3A output current?
The OC pin sets average output current using an external resistor. Per Equation (1) in the datasheet, ROC = 75.24 / ILIM. For 3A, ROC = 25.08kΩ - a standard 24.9kΩ resistor achieves 3.02A, validated by Table 1's 21.5kΩ → 3.56A and 30kΩ → 2.54A entries.
Does MP28167GQ-Z require external bootstrap capacitors, and what value is recommended?
Yes - two 100nF (0.1µF) X7R ceramic capacitors are mandatory: one between BST1 and SW1, another between BST2 and SW2. These form floating supplies for the high-side gate drivers and must be placed within 2mm of their respective pins to ensure reliable switching at 500kHz.
What thermal derating applies when operating at maximum 22V input and 3A load?
At 22V/3A (66W input), power dissipation is ~6.6W (assuming 90% efficiency). With θJA = 26°C/W on a 4-layer board, junction rise is ~172°C - exceeding 150°C rating. Derating to ≤2.2A at 22V is required unless using enhanced thermal layout (2oz copper, thermal vias under EPAD, airflow).
Is the MP28167GQ-Z RoHS and REACH compliant?
Yes - all MPS parts, including MP28167GQ-Z, are lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed in the official MPS Quality Assurance documentation.
MP28167GQ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 22V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 530kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
MP28167GQ-Z FAQ
1.How can I place an order for MP28167GQ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP28167GQ-Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MP28167GQ-Z reliable?
The price and inventory of MP28167GQ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP28167GQ-Z is usually 5 days.
3.What payment methods are accepted for MP28167GQ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP28167GQ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP28167GQ-Z?
MP28167GQ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP28167GQ-Z order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MP28167GQ-Z?
For technical support, including MP28167GQ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP28167GQ-Z requirements.
6.How does Aetrix verify that MP28167GQ-Z is sourced from the original manufacturer or authorized distributors?
All MP28167GQ-Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP28167GQ-Z meets industry standards.
7.What is the process for return or replacement of MP28167GQ-Z?
All MP28167GQ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP28167GQ-Z, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MP28167GQ-Z part is unused and in its original packaging.
Return procedure for MP28167GQ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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